2008-03-14
LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
57
The audio signal is not output (4)
No sound from HEADPHONE_OUTPUT terminal.
MINI AV_UNIT:
YES
YES
YES
Is the audio signal output from IC U602 to pin(2) (HPOUTL) and pin
(3) (HPOUTR) of headphone terminal CN602?
Is the HP_DET# signal input into pin (AE6) of IC U401 from pin (6)
of a headphone terminal (CN602)?
NO
Check the connection to CN602 and external headphone is plug
in well.
NO
Check the line between IC U602 and CN602.
Check IC U401 and its peripheral circuits.
Is the audio signal output from IC U401 pin(V35) and pin(U34) sent
to pin(1)(INL-) and pin(4)(INR-) of IC U602?
NO
Check the line between IC U401 and IC U602.
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